Create a virtual Directory for OFS pointing out ofs directory with path c:\inetpub\wwwroot\ofs (Read Only) Create another one pointing out ftp directory with path c:\inetpub\wwwroot\ofs\ftp

Select Read / Write access for this one

FTP Security  Right Click on FTP Server Status

Start Computer management from administrative tools

Set IUSR_MachineName as Administrator of the PC

With Explorer go on ofs\ftp directory

Select files and in Security option add IUSR_MachineName user with Full access rights

DCOM Configuration

The following section describe how to set up DCOM Configuration.In order to start DCOM configuration from Start menu -> run then enter dcomcnfg

From  My Computer Select  Default COM Security

Select  Edit Default

Customize Launch & Access permission add IUSR_PCNames user

Customize Launch Permission by adding this user too

Installation complete

The IIS server is now well configured and OPC XML is now available on your PC

IIS Web Site Configuration

After OFS installation you must configure the Server in order to define OFS directory previously created as a web site from IIS. From Internet Information Service (Administrative Tools) define a virtual Directory for OFS